From: Thierry Reding <treding@xxxxxxxxxx>
Some changes in recent years have modified the upstream kernel driver in
some ways that make it incompatible with the current template. Update
the template to take into account changes introduced by the following
commits:
commit e3d2160f12d6aa7a87d9db09d8458b4a3492cd45
Author: Paul Gortmaker <paul.gortmaker@xxxxxxxxxxxxx>
Date: Mon May 22 16:56:47 2017 -0400
pinctrl: tegra: clean up modular vs. non-modular distinctions
None of the Kconfigs for any of these drivers are tristate,
meaning that they currently are not being built as a module by anyone.
Lets remove the modular code that is essentially orphaned, so that
when reading the drivers there is no doubt they are builtin-only. All
drivers get similar changes, so they are handled in batch.
We remove module.h from code that isn't doing anything modular at
all; if they have __init sections, then replace it with init.h.
A couple drivers have module_exit() code that is essentially orphaned,
and so we remove that.
Quite a few bool drivers (hence non-modular) are converted over to
to builtin_platform_driver().
Since module_platform_driver() uses the same init level priority as
builtin_platform_driver() the init ordering remains unchanged with
this commit.
Also note that MODULE_DEVICE_TABLE is a no-op for non-modular code.
We also delete the MODULE_LICENSE tag etc. since all that information
was (or is now) contained at the top of the file in the comments.
Cc: Linus Walleij <linus.walleij@xxxxxxxxxx>
Cc: Stephen Warren <swarren@xxxxxxxxxxxxx>
Cc: Thierry Reding <thierry.reding@xxxxxxxxx>
Cc: Alexandre Courbot <gnurou@xxxxxxxxx>
Cc: Pritesh Raithatha <praithatha@xxxxxxxxxx>
Cc: Ashwini Ghuge <aghuge@xxxxxxxxxx>
Cc: linux-gpio@xxxxxxxxxxxxxxx
Cc: linux-tegra@xxxxxxxxxxxxxxx
Signed-off-by: Paul Gortmaker <paul.gortmaker@xxxxxxxxxxxxx>
Signed-off-by: Linus Walleij <linus.walleij@xxxxxxxxxx>
commit 3c94d2d08a032d911bbe34f2edb24cb63a63644a
Author: Stefan Agner <stefan@xxxxxxxx>
Date: Thu Jul 26 17:40:24 2018 +0200
pinctrl: tegra: define GPIO compatible node per SoC
Tegra 2 uses a different GPIO controller which uses "tegra20-gpio" as
compatible string.
Make the compatible string the GPIO node is using a SoC specific
property. This prevents the kernel from registering the GPIO range
twice in case the GPIO range is specified in the device tree.
Fixes: 9462510ce31e ("pinctrl: tegra: Only set the gpio range if needed")
Signed-off-by: Stefan Agner <stefan@xxxxxxxx>
Signed-off-by: Linus Walleij <linus.walleij@xxxxxxxxxx>
commit 1e0813ee5599932c856bda64a568895ed7a33d3a
Author: Dmitry Osipenko <digetx@xxxxxxxxx>
Date: Thu Aug 2 14:11:43 2018 +0300
pinctrl: tegra: Move drivers registration to arch_init level
There is a bug in regards to deferred probing within the drivers core
that causes GPIO-driver to suspend after its users. The bug appears if
GPIO-driver probe is getting deferred, which happens after introducing
dependency on PINCTRL-driver for the GPIO-driver by defining "gpio-ranges"
property in device-tree. The bug in the drivers core is old (more than 4
years now) and is well known, unfortunately there is no easy fix for it.
The good news is that we can workaround the deferred probe issue by
changing GPIO / PINCTRL drivers registration order and hence by moving
PINCTRL driver registration to the arch_init level and GPIO to the
subsys_init.
Signed-off-by: Dmitry Osipenko <digetx@xxxxxxxxx>
Acked-by: Stefan Agner <stefan@xxxxxxxx>
Signed-off-by: Linus Walleij <linus.walleij@xxxxxxxxxx>
Note that the last one is something that we probably should fix
correctly by using device links rather than working around it by playing
init level tricks.
Signed-off-by: Thierry Reding <treding@xxxxxxxxxx>
---
soc-to-kernel-pinctrl-driver.py | 27 +++++++++++----------------
1 file changed, 11 insertions(+), 16 deletions(-)
diff --git a/soc-to-kernel-pinctrl-driver.py b/soc-to-kernel-pinctrl-driver.py
index 65e4c604f1c9..37f34b15db2b 100755
--- a/soc-to-kernel-pinctrl-driver.py
+++ b/soc-to-kernel-pinctrl-driver.py
@@ -41,22 +41,16 @@ if dbg: print(args)
soc = tegra_pmx_soc_parser.load_soc(args.soc)
print('''\
+// SPDX-License-Identifier: GPL-2.0-only
/*
* Pinctrl data for the NVIDIA %s pinmux
*
- * Copyright (c) %s, NVIDIA CORPORATION. All rights reserved.
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms and conditions of the GNU General Public License,
- * version 2, as published by the Free Software Foundation.
+ * Author: %s
*
- * This program is distributed in the hope it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
- * more details.
+ * Copyright (c) %s, NVIDIA CORPORATION. All rights reserved.
*/
-#include <linux/module.h>
+#include <linux/init.h>
#include <linux/of.h>
#include <linux/platform_device.h>
#include <linux/pinctrl/pinctrl.h>
@@ -68,7 +62,7 @@ print('''\
* Most pins affected by the pinmux can also be GPIOs. Define these first.
* These must match how the GPIO driver names/numbers its pins.
*/
-''' % (soc.titlename, soc.kernel_copyright_years), end='')
+''' % (soc.titlename, soc.kernel_author, soc.kernel_copyright_years), end='')
# Do not add any more exceptions here; new SoCs should be formatted correctly
if soc.name == 'tegra30':
@@ -615,6 +609,7 @@ print('''\
static const struct tegra_pinctrl_soc_data %(soc)s_pinctrl = {
.ngpios = NUM_GPIOS,
+ .gpio_compatible = "nvidia,%(soc)s-gpio",
.pins = %(soc)s_pins,
.npins = ARRAY_SIZE(%(soc)s_pins),
.functions = %(soc)s_functions,
@@ -635,7 +630,6 @@ static const struct of_device_id %(soc)s_pinctrl_of_match[] = {
{ .compatible = "nvidia,%(soc)s-pinmux", },
{ },
};
-MODULE_DEVICE_TABLE(of, %(soc)s_pinctrl_of_match);
static struct platform_driver %(soc)s_pinctrl_driver = {
.driver = {
@@ -644,9 +638,10 @@ static struct platform_driver %(soc)s_pinctrl_driver = {
},
.probe = %(soc)s_pinctrl_probe,
};
-module_platform_driver(%(soc)s_pinctrl_driver);
-MODULE_AUTHOR("%(author)s");
-MODULE_DESCRIPTION("NVIDIA %(usoc)s pinctrl driver");
-MODULE_LICENSE("GPL v2");
+static int __init %(soc)s_pinctrl_init(void)
+{
+ return platform_driver_register(&%(soc)s_pinctrl_driver);
+}
+arch_initcall(%(soc)s_pinctrl_init);
''' % socvars, end='')
--
2.21.0
